// (c) Copyright Ascensio System SIA 2010-2022
//
// This program is a free software product.
// You can redistribute it and/or modify it under the terms
// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
// Foundation. In accordance with Section 7(a) of the GNU AGPL its Section 15 shall be amended
// to the effect that Ascensio System SIA expressly excludes the warranty of non-infringement of
// any third-party rights.
//
// This program is distributed WITHOUT ANY WARRANTY, without even the implied warranty
// of MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE. For details, see
// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
//
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//
// The  interactive user interfaces in modified source and object code versions of the Program must
// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
//
// Pursuant to Section 7(b) of the License you must retain the original Product logo when
// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
// trademark law for use of our trademarks.
//
// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode

namespace Textile;

public partial class TextileFormatter
{
    #region Block Modifiers Registration

    private static readonly List<BlockModifier> _blockModifiers = new List<BlockModifier>();
    private static readonly List<Type> _blockModifiersTypes = new List<Type>();

    public static void RegisterBlockModifier(BlockModifier blockModifer)
    {
        _blockModifiers.Add(blockModifer);
        _blockModifiersTypes.Add(blockModifer.GetType());
    }

    #endregion

    #region Block Modifiers Management

    private readonly List<Type> _disabledBlockModifiers = new List<Type>();

    public bool IsBlockModifierEnabled(Type type)
    {
        return !_disabledBlockModifiers.Contains(type);
    }

    public void SwitchBlockModifier(Type type, bool onOff)
    {
        if (onOff)
        {
            _disabledBlockModifiers.Remove(type);
        }
        else if (!_disabledBlockModifiers.Contains(type))
        {
            _disabledBlockModifiers.Add(type);
        }
    }

    #endregion
}
